IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2011  > Vol8 No.4
The suitability of using leaf area index to quantify soil loss under vegetation cover
Zhang Wentai; Yu Dongsheng; Shi Xuezheng; Wang Hongjie; Gu Zhujun; Zhang Xiangyan; Tan Manzhi
Corresponding AuthorYu, DS
2011-08
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume8Issue:4Pages:564–570
AbstractSoil erosion by water under forest cover is a serious problem in southern China. A comparative study was carried out on the use of leaf area index (LAI) and vegetation fractional coverage (VFC) in quantifying soil loss under vegetation cover. Five types of vegetation with varied LAI and VFC under field conditions were exposed to two rainfall rates (40 mm h(-1) and 54 mm h(-1)) using a portable rainfall simulator. Runoff rate, sediment concentration and soil loss rate were measured at relatively runoff stable state. Significant negative exponential relationship (p < 0.05, R(2) = 0.83) and linear relationship (p < 0.05, R(2) = 0.84) were obtained between LAI and sediment concentration, while no significant relationship existed between VFC and sediment concentration. The mechanism by which vegetation canopy prevents soil loss was by reducing rainfall kinetic energy and sediment concentration. LAI could better quantify such a role than VFC. However, neither LAI nor VFC could explain runoff rate or soil loss rate. Caution must be taken when using LAI to quantify the role of certain vegetation in soil and water conservation.
KeywordLeaf Area Index (Lai) Runoff Steady State Sediment Concentration Simulated Rainfall
Language英语
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5858
CollectionJournal of Mountain Science_Journal of Mountain Science-2011_Vol8 No.4
Recommended Citation
GB/T 7714
Zhang Wentai,Yu Dongsheng,Shi Xuezheng,et al. The suitability of using leaf area index to quantify soil loss under vegetation cover[J]. JOURNAL OF MOUNTAIN SCIENCE,2011,8(4):564–570.
APA Zhang Wentai.,Yu Dongsheng.,Shi Xuezheng.,Wang Hongjie.,Gu Zhujun.,...&Tan Manzhi.(2011).The suitability of using leaf area index to quantify soil loss under vegetation cover.JOURNAL OF MOUNTAIN SCIENCE,8(4),564–570.
MLA Zhang Wentai,et al."The suitability of using leaf area index to quantify soil loss under vegetation cover".JOURNAL OF MOUNTAIN SCIENCE 8.4(2011):564–570.
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